The Investment Company Institute's latest weekly "Money Market Fund Assets" report shows money fund assets falling $21.5 billion to $7.873 trillion, after they increased $109.3 billion to a record high of $7.894 trillion the previous week. MMF assets are up by $866 billion, or 12.4%, over the past 52 weeks (through 6/10/26), with Institutional MMFs up $658 billion, or 16.0% and Retail MMFs up $208 billion, or 7.2%. Year-to-date in 2026, MMF assets are up by $139 billion, or 1.8%, with Institutional MMFs up $121 billion, or 2.6% and Retail MMFs up $18 billion, or 0.6%. ICI's weekly release says, "Total money market fund assets decreased by $21.48 billion to $7.87 trillion for the week ended Wednesday, June 10, the Investment Company Institute reported.... Among taxable money market funds, government funds decreased by $13.60 billion and prime funds decreased by $6.64 billion. Tax-exempt money market funds decreased by $1.23 billion." ICI's stats show Institutional MMFs decreasing $16.2 billion and Retail MMFs decreasing $5.3 billion in the latest week. Total Government MMF assets, including Treasury funds, were $6.497 trillion (82.5% of all money funds), while Total Prime MMFs were $1.231 trillion (15.6%). Tax Exempt MMFs totaled $145.0 billion (1.8%). It explains, "Assets of retail money market funds decreased by $5.25 billion to $3.10 trillion. Among retail funds, government money market fund assets decreased by $2.53 billion to $1.97 trillion, prime money market fund assets decreased by $2.09 billion to $989.47 billion, and tax-exempt fund assets decreased by $623 million to $132.45 billion." Retail assets account for 39.3% of the total, and Government Retail assets make up 63.8% of all Retail MMFs. They add, "Assets of institutional money market funds decreased by $16.23 billion to $4.78 trillion. Among institutional funds, government money market fund assets decreased by $11.07 billion to $4.52 trillion, prime money market fund assets decreased by $4.55 billion to $241.39 billion, and tax-exempt fund assets decreased by $612 million to $12.51 billion." Institutional assets accounted for 60.7% of all MMF assets, with Government Institutional assets making up 94.7% of all institutional MMF totals. According to Crane Data's separate Money Fund Intelligence Daily series, money fund assets have increased by $27.2 billion to $8.319 trillion month-to-date in June (as of 6/10), assets hit a record high on June 4 of $8.346 trillion. Assets increased $208.6 billion in May, decreased by $108.8 billion in April, $49.3 billion in March, increased $99.5 billion in February, $32.9 billion in January, $126.3 billion in December, $132.8 billion in November, $142.1 billion in October, $105.2 billion in September and $132.0 billion in August. They rose $63.7 billion in July and $6.7 billion last June. Note that ICI's asset totals don't include a number of funds tracked by the SEC and Crane Data, so they're almost $400 billion lower than Crane's asset series.